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6857194: Add hotspot perf counters to aid class loading performance measurement

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Add new jvmstat counters to measure detailed class loading time

Reviewed-by: acorn, kamg
This commit is contained in:
Mandy Chung 2009-07-10 11:10:00 -07:00
parent c8140c1078
commit 08f5aeffc1
11 changed files with 274 additions and 33 deletions
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47
hotspot/src/share/vm/classfile/classLoader.cpp
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@ -48,9 +48,26 @@ static canonicalize_fn_t CanonicalizeEntry = NULL;
PerfCounter* ClassLoader::_perf_accumulated_time = NULL;
PerfCounter* ClassLoader::_perf_classes_inited = NULL;
PerfCounter* ClassLoader::_perf_class_init_time = NULL;
PerfCounter* ClassLoader::_perf_class_init_selftime = NULL;
PerfCounter* ClassLoader::_perf_classes_verified = NULL;
PerfCounter* ClassLoader::_perf_class_verify_time = NULL;
PerfCounter* ClassLoader::_perf_class_verify_selftime = NULL;
PerfCounter* ClassLoader::_perf_classes_linked = NULL;
PerfCounter* ClassLoader::_perf_class_link_time = NULL;
PerfCounter* ClassLoader::_perf_class_link_selftime = NULL;
PerfCounter* ClassLoader::_perf_class_parse_time = NULL;
PerfCounter* ClassLoader::_perf_class_parse_selftime = NULL;
PerfCounter* ClassLoader::_perf_sys_class_lookup_time = NULL;
PerfCounter* ClassLoader::_perf_shared_classload_time = NULL;
PerfCounter* ClassLoader::_perf_sys_classload_time = NULL;
PerfCounter* ClassLoader::_perf_app_classload_time = NULL;
PerfCounter* ClassLoader::_perf_app_classload_selftime = NULL;
PerfCounter* ClassLoader::_perf_app_classload_count = NULL;
PerfCounter* ClassLoader::_perf_define_appclasses = NULL;
PerfCounter* ClassLoader::_perf_define_appclass_time = NULL;
PerfCounter* ClassLoader::_perf_define_appclass_selftime = NULL;
PerfCounter* ClassLoader::_perf_app_classfile_bytes_read = NULL;
PerfCounter* ClassLoader::_perf_sys_classfile_bytes_read = NULL;
PerfCounter* ClassLoader::_sync_systemLoaderLockContentionRate = NULL;
PerfCounter* ClassLoader::_sync_nonSystemLoaderLockContentionRate = NULL;
PerfCounter* ClassLoader::_sync_JVMFindLoadedClassLockFreeCounter = NULL;
@ -152,6 +169,9 @@ ClassFileStream* ClassPathDirEntry::open_stream(const char* name) {
hpi::close(file_handle);
// construct ClassFileStream
if (num_read == (size_t)st.st_size) {
if (UsePerfData) {
ClassLoader::perf_sys_classfile_bytes_read()->inc(num_read);
}
return new ClassFileStream(buffer, st.st_size, _dir); // Resource allocated
}
}
@ -198,6 +218,9 @@ ClassFileStream* ClassPathZipEntry::open_stream(const char* name) {
buffer = NEW_RESOURCE_ARRAY(u1, filesize);
if (!(*ReadEntry)(_zip, entry, buffer, filename)) return NULL;
}
if (UsePerfData) {
ClassLoader::perf_sys_classfile_bytes_read()->inc(filesize);
}
// return result
return new ClassFileStream(buffer, filesize, _zip_name); // Resource allocated
}
@ -825,7 +848,9 @@ instanceKlassHandle ClassLoader::load_classfile(symbolHandle h_name, TRAPS) {
ClassFileStream* stream = NULL;
int classpath_index = 0;
{
PerfTraceTime vmtimer(perf_accumulated_time());
PerfClassTraceTime vmtimer(perf_sys_class_lookup_time(),
((JavaThread*) THREAD)->get_thread_stat()->perf_timers_addr(),
PerfClassTraceTime::CLASS_LOAD);
ClassPathEntry* e = _first_entry;
while (e != NULL) {
stream = e->open_stream(name);
@ -890,11 +915,29 @@ void ClassLoader::initialize() {
// jvmstat performance counters
NEWPERFTICKCOUNTER(_perf_accumulated_time, SUN_CLS, "time");
NEWPERFTICKCOUNTER(_perf_class_init_time, SUN_CLS, "classInitTime");
NEWPERFTICKCOUNTER(_perf_class_init_selftime, SUN_CLS, "classInitTime.self");
NEWPERFTICKCOUNTER(_perf_class_verify_time, SUN_CLS, "classVerifyTime");
NEWPERFTICKCOUNTER(_perf_class_verify_selftime, SUN_CLS, "classVerifyTime.self");
NEWPERFTICKCOUNTER(_perf_class_link_time, SUN_CLS, "classLinkedTime");
NEWPERFTICKCOUNTER(_perf_class_link_selftime, SUN_CLS, "classLinkedTime.self");
NEWPERFEVENTCOUNTER(_perf_classes_inited, SUN_CLS, "initializedClasses");
NEWPERFEVENTCOUNTER(_perf_classes_linked, SUN_CLS, "linkedClasses");
NEWPERFEVENTCOUNTER(_perf_classes_verified, SUN_CLS, "verifiedClasses");
NEWPERFTICKCOUNTER(_perf_class_parse_time, SUN_CLS, "parseClassTime");
NEWPERFTICKCOUNTER(_perf_class_parse_selftime, SUN_CLS, "parseClassTime.self");
NEWPERFTICKCOUNTER(_perf_sys_class_lookup_time, SUN_CLS, "lookupSysClassTime");
NEWPERFTICKCOUNTER(_perf_shared_classload_time, SUN_CLS, "sharedClassLoadTime");
NEWPERFTICKCOUNTER(_perf_sys_classload_time, SUN_CLS, "sysClassLoadTime");
NEWPERFTICKCOUNTER(_perf_app_classload_time, SUN_CLS, "appClassLoadTime");
NEWPERFTICKCOUNTER(_perf_app_classload_selftime, SUN_CLS, "appClassLoadTime.self");
NEWPERFEVENTCOUNTER(_perf_app_classload_count, SUN_CLS, "appClassLoadCount");
NEWPERFTICKCOUNTER(_perf_define_appclasses, SUN_CLS, "defineAppClasses");
NEWPERFTICKCOUNTER(_perf_define_appclass_time, SUN_CLS, "defineAppClassTime");
NEWPERFTICKCOUNTER(_perf_define_appclass_selftime, SUN_CLS, "defineAppClassTime.self");
NEWPERFBYTECOUNTER(_perf_app_classfile_bytes_read, SUN_CLS, "appClassBytes");
NEWPERFBYTECOUNTER(_perf_sys_classfile_bytes_read, SUN_CLS, "sysClassBytes");
// The following performance counters are added for measuring the impact
// of the bug fix of 6365597. They are mainly focused on finding out